/* ============================================================
   TECHROH — Global Styles & Design System
   ============================================================ */

/* ----- CSS Variables (Design Tokens) ----- */
:root {
  /* Colours */
  --color-primary: #1a1a2e;          /* deep navy */
  --color-secondary: #e94560;        /* Techroh coral-red */
  --color-secondary-light: #ff6b81;
  --color-secondary-dark: #c0392b;
  --color-white: #ffffff;
  --color-gray-100: #f4f4f9;
  --color-gray-200: #e0e0e8;
  --color-gray-300: #b0b0c0;
  --color-gray-400: #7a7a8a;
  --color-gray-500: #4a4a5a;
  --color-gray-600: #35354a;
  --color-bg: #0d0d1a;               /* near black */
  --color-bg-card: rgba(26, 26, 46, 0.8);
  --color-bg-card-strong: rgba(26, 26, 46, 0.95);
  --color-border: rgba(255, 255, 255, 0.06);

  /* Surface tints (used for card/section backgrounds & borders) */
  --surface-1: rgba(255, 255, 255, 0.01);
  --surface-2: rgba(255, 255, 255, 0.02);
  --surface-3: rgba(255, 255, 255, 0.03);
  --surface-4: rgba(255, 255, 255, 0.04);
  --surface-5: rgba(255, 255, 255, 0.05);
  --surface-6: rgba(255, 255, 255, 0.06);
  --surface-10: rgba(255, 255, 255, 0.1);
  --surface-15: rgba(255, 255, 255, 0.15);

  /* Translucent chrome (navbar / dropdown / mobile panel) */
  --overlay-nav: rgba(13, 13, 26, 0.85);
  --overlay-dropdown: rgba(13, 13, 26, 0.95);
  --overlay-panel: rgba(13, 13, 26, 0.98);

  /* Text that always sits on a permanently-dark surface (badges, device mockups) */
  --color-on-dark: #ffffff;

  /* Typography */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-weight-light: 400;
  --font-weight-regular: 500;
  --font-weight-bold: 600;
  --font-weight-extra: 700;
  --font-weight-black: 800;

  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 4rem;
  --spacing-xl: 6rem;
  --spacing-xxl: 8rem;

  /* Radius */
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;

  /* Shadows */
  --shadow-subtle: 0 4px 20px rgba(0, 0, 0, 0.3);
  --shadow-medium: 0 10px 40px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 60px rgba(233, 69, 96, 0.15);

  /* Ambient coral glows (hero Core/cursor-energy) — kept mild in both
     themes, but light backgrounds show any tint far more readily than
     near-black ones, so this needs its own (lower) light-mode value
     rather than reusing the dark-mode alpha. */
  --glow-ambient: rgba(233, 69, 96, 0.16);
  --glow-ambient-strong: rgba(233, 69, 96, 0.4);
  --glow-cursor: rgba(233, 69, 96, 0.08);

  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-medium: 0.4s cubic-bezier(0.22, 1, 0.36, 1);
  --transition-slow: 0.6s cubic-bezier(0.22, 1, 0.36, 1);
}

/* ----- Light Theme ----- */
:root[data-theme="light"] {
  --color-primary: #eceef7;
  --color-white: #14141f;
  --color-gray-100: #22222f;
  --color-gray-200: #2e2e3d;
  --color-gray-300: #4a4a5c;
  --color-gray-400: #5f5f6e;
  --color-gray-500: #78788a;
  --color-gray-600: #9c9cab;
  --color-bg: #f6f7fb;
  --color-bg-card: rgba(20, 20, 31, 0.04);
  --color-bg-card-strong: rgba(20, 20, 31, 0.08);
  --color-border: rgba(20, 20, 31, 0.1);

  --surface-1: rgba(20, 20, 31, 0.02);
  --surface-2: rgba(20, 20, 31, 0.03);
  --surface-3: rgba(20, 20, 31, 0.04);
  --surface-4: rgba(20, 20, 31, 0.05);
  --surface-5: rgba(20, 20, 31, 0.06);
  --surface-6: rgba(20, 20, 31, 0.07);
  --surface-10: rgba(20, 20, 31, 0.08);
  --surface-15: rgba(20, 20, 31, 0.14);

  --overlay-nav: rgba(246, 247, 251, 0.85);
  --overlay-dropdown: rgba(255, 255, 255, 0.96);
  --overlay-panel: rgba(255, 255, 255, 0.98);

  --shadow-subtle: 0 4px 20px rgba(20, 20, 31, 0.08);
  --shadow-medium: 0 10px 40px rgba(20, 20, 31, 0.12);
  --shadow-glow: 0 0 60px rgba(233, 69, 96, 0.12);

  --glow-ambient: rgba(233, 69, 96, 0.07);
  --glow-ambient-strong: rgba(233, 69, 96, 0.16);
  --glow-cursor: rgba(233, 69, 96, 0.04);
}

/* ----- Reset & Base ----- */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-family);
  background: var(--color-bg);
  color: var(--color-gray-100);
  line-height: 1.6;
  overflow-x: hidden;
  cursor: default;
  transition: background-color var(--transition-medium), color var(--transition-medium);
}

a {
  color: var(--color-secondary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-secondary-light);
}

img {
  max-width: 100%;
  display: block;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

/* ----- Typography ----- */
h1,
h2,
h3,
h4,
h5 {
  font-weight: var(--font-weight-bold);
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--color-white);
}

h1 {
  font-size: clamp(2.8rem, 7vw, 4.8rem);
  font-weight: var(--font-weight-black);
}

h2 {
  font-size: clamp(2.2rem, 4.5vw, 3.2rem);
  margin-bottom: var(--spacing-sm);
}

h3 {
  font-size: 1.6rem;
  margin-bottom: var(--spacing-xs);
}

p {
  color: var(--color-gray-300);
  max-width: 70ch;
}

.section {
  padding: var(--spacing-xl) 0;
}

.section-label {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--color-secondary);
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--spacing-xs);
}

.section-title {
  margin-bottom: var(--spacing-sm);
}

.section-sub {
  font-size: 1.2rem;
  color: var(--color-gray-400);
  max-width: 60ch;
  margin-bottom: var(--spacing-lg);
}

.highlight {
  color: var(--color-secondary);
}

/* ----- Buttons ----- */
.btn {
  display: inline-block;
  padding: 0.8rem 2rem;
  font-family: var(--font-family);
  font-weight: var(--font-weight-bold);
  font-size: 1rem;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-medium);
  text-align: center;
  letter-spacing: 0.01em;
  position: relative;
  overflow: hidden;
}

.btn-primary {
  background: var(--color-secondary);
  color: var(--color-white);
  box-shadow: 0 4px 20px rgba(233, 69, 96, 0.3);
}

.btn-primary:hover {
  background: var(--color-secondary-light);
  transform: translateY(-2px) scale(1.02);
  box-shadow: 0 8px 30px rgba(233, 69, 96, 0.5);
}

.btn-secondary {
  background: var(--surface-5);
  color: var(--color-white);
  border: 1px solid var(--surface-15);
  backdrop-filter: blur(4px);
}

.btn-secondary:hover {
  background: var(--surface-10);
  transform: translateY(-2px);
  border-color: var(--color-secondary);
}

.btn-outline {
  background: transparent;
  color: var(--color-white);
  border: 1px solid var(--color-gray-400);
}

.btn-outline:hover {
  border-color: var(--color-secondary);
  color: var(--color-secondary);
  transform: translateY(-2px);
}

.btn-sm {
  padding: 0.5rem 1.2rem;
  font-size: 0.85rem;
}

.btn-lg {
  padding: 1rem 2.8rem;
  font-size: 1.1rem;
}

/* ----- Navbar ----- */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 1rem 0;
  background: var(--overlay-nav);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--surface-4);
  transition: background var(--transition-medium);
}

.navbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.navbar-logo img {
  height: 36px;
  width: auto;
}

.navbar-menu {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.navbar-links {
  display: flex;
  list-style: none;
  gap: var(--spacing-sm);
  align-items: center;
}

.navbar-links a {
  color: var(--color-gray-300);
  font-weight: var(--font-weight-regular);
  font-size: 0.95rem;
  padding: 0.4rem 0.8rem;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
  position: relative;
}

.navbar-links a:hover,
.navbar-links a.active {
  color: var(--color-white);
  background: var(--surface-4);
}

.navbar-links a.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 60%;
  height: 2px;
  background: var(--color-secondary);
  border-radius: 2px;
}

/* Dropdown */
.has-dropdown {
  position: relative;
}

.dropdown {
  position: absolute;
  top: 120%;
  left: 0;
  background: var(--overlay-dropdown);
  backdrop-filter: blur(12px);
  border: 1px solid var(--surface-6);
  border-radius: var(--radius-md);
  padding: 0.8rem 0;
  min-width: 220px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: all var(--transition-medium);
  box-shadow: var(--shadow-medium);
  list-style: none;
}

.has-dropdown:hover .dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.dropdown li a {
  display: block;
  padding: 0.5rem 1.2rem;
  color: var(--color-gray-300);
  font-size: 0.9rem;
  background: transparent;
}

.dropdown li a:hover {
  background: rgba(233, 69, 96, 0.1);
  color: var(--color-white);
}

.navbar-cta {
  margin-left: var(--spacing-sm);
}

/* ----- Theme Toggle ----- */
.navbar-right {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  background: var(--surface-4);
  border: 1px solid var(--color-border);
  border-radius: 50%;
  color: var(--color-gray-100);
  cursor: pointer;
  transition: all var(--transition-fast);
  flex-shrink: 0;
}

.theme-toggle:hover {
  border-color: var(--color-secondary);
  color: var(--color-secondary);
  transform: translateY(-2px);
}

.theme-toggle svg {
  width: 19px;
  height: 19px;
}

.theme-toggle .icon-sun {
  display: none;
}

.theme-toggle .icon-moon {
  display: block;
}

:root[data-theme="light"] .theme-toggle .icon-sun {
  display: block;
}

:root[data-theme="light"] .theme-toggle .icon-moon {
  display: none;
}

.navbar-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 0.3rem;
}

.navbar-toggle .bar {
  width: 28px;
  height: 2px;
  background: var(--color-white);
  border-radius: 2px;
  transition: all var(--transition-fast);
}

/* Mobile menu */
@media (max-width: 900px) {
  .navbar-toggle {
      display: flex;
  }

  .navbar-menu {
      position: fixed;
      top: 0;
      right: -100%;
      width: 80%;
      max-width: 400px;
      height: 100vh;
      background: var(--overlay-panel);
      backdrop-filter: blur(20px);
      flex-direction: column;
      justify-content: center;
      align-items: flex-start;
      padding: var(--spacing-lg);
      transition: right var(--transition-medium);
      border-left: 1px solid var(--surface-5);
      gap: var(--spacing-md);
  }

  .navbar-menu.open {
      right: 0;
  }

  .navbar-links {
      flex-direction: column;
      align-items: flex-start;
      gap: var(--spacing-sm);
      width: 100%;
  }

  .navbar-links a {
      font-size: 1.2rem;
      padding: 0.6rem 0;
      width: 100%;
  }

  .dropdown {
      position: static;
      background: transparent;
      backdrop-filter: none;
      border: none;
      box-shadow: none;
      padding: 0;
      opacity: 1;
      visibility: visible;
      transform: none;
      display: none;
      padding-left: var(--spacing-sm);
  }

  .has-dropdown:hover .dropdown {
      display: block;
  }

  .navbar-cta {
      margin-left: 0;
      width: 100%;
  }

  .navbar-cta .btn {
      width: 100%;
      text-align: center;
  }
}

/* ----- Footer ----- */
.footer {
  background: var(--color-primary);
  padding: var(--spacing-xl) 0 var(--spacing-md);
  border-top: 1px solid var(--surface-4);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-lg);
}

.footer-brand .footer-logo img {
  height: 32px;
  width: auto;
  margin-bottom: var(--spacing-sm);
}

.footer-tagline {
  color: var(--color-gray-400);
  font-size: 0.95rem;
  margin-bottom: var(--spacing-sm);
}

.footer-social a {
  color: var(--color-gray-400);
  font-size: 0.9rem;
  transition: color var(--transition-fast);
}

.footer-social a:hover {
  color: var(--color-secondary);
}

.footer h4 {
  font-size: 1rem;
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--spacing-sm);
  color: var(--color-white);
}

.footer ul {
  list-style: none;
}

.footer ul li {
  margin-bottom: 0.4rem;
}

.footer ul li a {
  color: var(--color-gray-400);
  font-size: 0.9rem;
  transition: color var(--transition-fast);
}

.footer ul li a:hover {
  color: var(--color-white);
}

.footer-bottom {
  border-top: 1px solid var(--surface-4);
  padding-top: var(--spacing-md);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
  color: var(--color-gray-500);
  font-size: 0.85rem;
}

.footer-contact a {
  color: var(--color-gray-400);
}

.footer-contact .sep {
  margin: 0 0.5rem;
  color: var(--color-gray-600);
}

@media (max-width: 768px) {
  .footer-grid {
      grid-template-columns: 1fr 1fr;
      gap: var(--spacing-md);
  }

  .footer-bottom {
      flex-direction: column;
      text-align: center;
  }
}

/* ----- Scroll Reveal ----- */
[data-reveal] {
  opacity: 0;
  transform: translateY(40px) scale(0.98);
  transition: opacity 0.8s cubic-bezier(0.22, 1, 0.36, 1),
      transform 0.8s cubic-bezier(0.22, 1, 0.36, 1);
}

[data-reveal].revealed {
  opacity: 1;
  transform: translateY(0) scale(1);
}

/* ----- Utility ----- */
.text-center {
  text-align: center;
}

.mt-1 {
  margin-top: var(--spacing-sm);
}

.mt-2 {
  margin-top: var(--spacing-md);
}

/* ----- Reduced Motion ----- */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
      animation-duration: 0.01ms !important;
      animation-iteration-count: 1 !important;
      transition-duration: 0.01ms !important;
  }

  [data-reveal] {
      opacity: 1 !important;
      transform: none !important;
  }
}

/* ----- Custom Cursor (desktop only) ----- */
@media (hover: hover) {
  .cursor-dot {
      position: fixed;
      width: 6px;
      height: 6px;
      background: var(--color-secondary);
      border-radius: 50%;
      pointer-events: none;
      z-index: 9999;
      transform: translate(-50%, -50%);
      transition: width 0.15s, height 0.15s, background 0.15s;
      will-change: transform;
      mix-blend-mode: difference;
  }

  .cursor-ring {
      position: fixed;
      width: 32px;
      height: 32px;
      border: 1px solid rgba(233, 69, 96, 0.4);
      border-radius: 50%;
      pointer-events: none;
      z-index: 9998;
      transform: translate(-50%, -50%);
      transition: width 0.3s, height 0.3s, border-color 0.3s, opacity 0.3s;
      will-change: transform;
      opacity: 0.6;
  }

  .cursor-ring.hover {
      width: 52px;
      height: 52px;
      border-color: var(--color-secondary);
      opacity: 1;
      background: rgba(233, 69, 96, 0.05);
  }
}

@media (hover: none) {
  .cursor-dot,
  .cursor-ring {
      display: none !important;
  }
}